M-497 Black Beetle
Built in the 1960s, the M-497 was an experimental train powered by jet engines. Its introduction was an attempt at bringing back the commuters who abandoned New York Central Railroad’s slower trains, the organization which sponsored the construction of the ‘Black Beetle’. The latter was a regular passenger train with a record speed of 185 mph (295 kilometers). This world record remained unbroken for 40 years.
https://www.theyellowsparrow.com/strangest-trains-weird-wednesdays/
